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IT Abbreviations & Acronyms: Comprehensive Glossary

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There are currently 51 acronyms in this directory beginning with the letter U.
U
UART
Universal Asynchronous Receiver/Transmitter
UAT
User Acceptance Testing
UBE
Unsolicited Bulk Email
UBL
Universal Business Language
UC
Unit Cost
UCaaS
Unified Communications-as-a-Service
UCE
Unsolicited Commercial Email
UCS
Unified Computing System
UDA
Universal Data Access
UDDI
Universal Description, Discovery, and Integration
UDF
Universal Disk Format
UDID
Unique Device Identifier
UDO
Ultra Density Optical
UDP
User Datagram Protocol
UEFI
Unified Extensible Firmware Interface
UGC
User-Generated Content
UHDTV
Ultra High-Definition TV
UHDV
Ultra High Definition Video
UHF
Ultrahigh Frequency
UI
User Interface
UIA
User Installed Application
UID
Unique Identifier
UIML
User Interface Markup Language
ULA
Oracle Unlimited License Agreement
Ultra DMA or UDMA
Ultra Direct Memory Access
UM server
Unified Messaging Server
UMLS
Unified Medical Language System
UMS
Unified Messaging System
UMTS
Universal Mobile Telecommunications System or Universal Mobile Telecommunications Service
UNC
Universal Naming Convention
UPN
User Principal Name
UPnP
Universal Plug and Play
UPS
Uninterruptible Power Supply
URI
Uniform Resource Identifier
URL
Uniform Resource Locator
URL Poisoning
Location Poisoning
URL Rewriting
URL Manipulation
URN
Uniform Resource Name
USB
Universal Serial Bus, Usb 3.0, Superspeed USB
USB 3.0
Superspeed USB
USGCB
United States Government Configuration Baseline
USP
Unique Selling Point
USSD
Unstructured Supplementary Service Data
USSS
United States Secret Service
UTC, GMT, CUT
Coordinated Universal Time
UTF-16
16- Bit Unicode Transformation Format
UTM
Unified Threat Management
UUCP
Unix-To-Unix Copy Protocol
UUID
Universal Unique Identifier
UX
User Experience
UXGA
Ultra Extended Graphics Array

A quick reference guide for Information Technology (IT) related acronyms and abbreviations.

As a service to IT personnel everywhere (and also for ourselves) we’ve compiled a comprehensive list of IT-related acronyms and abbreviations.

Acronyms can be pronounced as words, like NASA and UNESCO; as individual letters, like FBI, TNT, and ATM; or as both letters and words, like JPEG (pronounced JAY-peg).

Abbreviations formed from a string of initials and usually pronounced as individual letters are more specifically called initialisms or alphabetisms.

No matter how you refer to these IT-related terms, please use our quick reference guide or search TechTerms.com to help decode the world of IT abbreviations and acronyms.

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